Measuring mechanical motion with a single spin
| Autor: | Mikhail D. Lukin, Peter Rabl, A. C. Bleszynski Jayich, Jack Harris, Quirin Unterreithmeier, Shimon Kolkowitz, Steven Bennett |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
Physics
Quantum Physics Cantilever Condensed Matter - Mesoscale and Nanoscale Physics Detector General Physics and Astronomy Zero-point energy FOS: Physical sciences 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Measure (mathematics) 0103 physical sciences Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Sensitivity (control systems) Atomic physics 010306 general physics 0210 nano-technology Focus (optics) Spin (physics) Nitrogen-vacancy center Quantum Physics (quant-ph) |
| Popis: | We study theoretically the measurement of a mechanical oscillator using a single two level system as a detector. In a recent experiment, we used a single electronic spin associated with a nitrogen vacancy center in diamond to probe the thermal motion of a magnetized cantilever at room temperature {Kolkowitz et al., Science 335, 1603 (2012)}. Here, we present a detailed analysis of the sensitivity limits of this technique, as well as the possibility to measure the zero point motion of the oscillator. Further, we discuss the issue of measurement backaction in sequential measurements and find that although backaction heating can occur, it does not prohibit the detection of zero point motion. Throughout the paper we focus on the experimental implementation of a nitrogen vacancy center coupled to a magnetic cantilever; however, our results are applicable to a wide class of spin-oscillator systems. Implications for preparation of nonclassical states of a mechanical oscillator are also discussed. 17 pages, 6 figures |
| Databáze: | OpenAIRE |
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